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Pacific Harbor Seal Phoca Vitulina Richardsi Monitoring At Point Reyes National Seashore And Golden Gate National Recreation Area 2008 Annual Report
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Book Synopsis Pacific Harbor Seal (Phoca Vitulina Richardsi) Monitoring at Point Reyes National Seashore and Golden Gate National Recreation Area 2008 Annual Report by : National Park Service
Download or read book Pacific Harbor Seal (Phoca Vitulina Richardsi) Monitoring at Point Reyes National Seashore and Golden Gate National Recreation Area 2008 Annual Report written by National Park Service and published by CreateSpace. This book was released on 2013-09-13 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pacific harbor seals (Phoca vitulina richardsi) are the dominant and only year-round resident pinniped in the San Francisco Bay Area, California. Long-term monitoring studies have been conducted at the largest harbor seal colonies in Point Reyes National Seashore since the mid 1970's. The objectives of monitoring each site and the population as a whole are to i) detect changes in population size, ii) detect changes in reproductive success by way of pup production, and iii) identify anthropogenic or environmental factors that may affect the condition of the population (Adams et al. In Prep).
Book Synopsis Pacific Harbor Seal (Phoca Vitulina Richardsi) Monitoring at Point Reyes National Seashore and Golden Gate National Recreation Area by : National Park Service (Nps)
Download or read book Pacific Harbor Seal (Phoca Vitulina Richardsi) Monitoring at Point Reyes National Seashore and Golden Gate National Recreation Area written by National Park Service (Nps) and published by Scholar's Choice. This book was released on 2015-02-16 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Book Synopsis Pacific Harbor Seal (Phoca Vitulina Richardsi) Monitoring at Point Reyes National Seashore and Golden Gate National Recreation Area by : Sarah Codde
Download or read book Pacific Harbor Seal (Phoca Vitulina Richardsi) Monitoring at Point Reyes National Seashore and Golden Gate National Recreation Area written by Sarah Codde and published by CreateSpace. This book was released on 2013-09-04 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: The information presented in this report is a summary of the harbor seal data collected at Point Reyes National Seashore and Golden Gate National Recreation Area during the 2011 breeding and molting seasons, March-July. Summary data collected as part of a region-wide survey effort, including adjacent areas (San Francisco Bay, San Mateo County, and Sonoma County) where NPS surveys were conducted in conjunction with other agencies and organizations for 2011, are also presented.
Book Synopsis Shellfish Mariculture in Drakes Estero, Point Reyes National Seashore, California by : National Research Council
Download or read book Shellfish Mariculture in Drakes Estero, Point Reyes National Seashore, California written by National Research Council and published by National Academies Press. This book was released on 2009-07-17 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: When Drakes Estero, which lies within the Point Reyes National Seashore (PRNS) about 25 miles northwest of San Francisco, California, was designated by Congress in 1976 as Potential Wilderness, it contained a commercial shellfish mariculture operation. Oyster mariculture began in Drakes Estero with the introduction of the nonnative Pacific oyster in 1932, and has been conducted continuously from that date forward. Hence, the cultural history of oyster farming predates the designation of Point Reyes as a National Seashore in 1962. Nevertheless, with the approach of the 2012 expiration date of the current National Park Service (NPS) Reservation of Use and Occupancy (RUO) and Special Use Permit (SUP) that allows Drakes Bay Oyster Company (DBOC) to operate within the estero, NPS has expressed concern over the scope and intensity of impacts of the shellfish culture operations on the estero's ecosystem. Public debate over whether scientific information justifies closing the oyster farm led to the request for this study to help clarify the scientific issues raised with regard to the shellfish mariculture activities in Drakes Estero.
Book Synopsis Northern Elephant Seal Monitoring 2005-2007 Report, Point Reyes National Seashore - Scholar's Choice Edition by : National Park Service (Nps)
Download or read book Northern Elephant Seal Monitoring 2005-2007 Report, Point Reyes National Seashore - Scholar's Choice Edition written by National Park Service (Nps) and published by Scholar's Choice. This book was released on 2015-02-16 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Book Synopsis Harbor Seal, Phoca Vitulina Richardsi, Census in California, May-June 1987 by : Doyle A. Hanan
Download or read book Harbor Seal, Phoca Vitulina Richardsi, Census in California, May-June 1987 written by Doyle A. Hanan and published by . This book was released on 1988 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Harbor Seal, Phoca Vitulina Richardsi, Census in California, June 2-5, 30 and July 1, 1986 by : Doyle A. Hanan
Download or read book Harbor Seal, Phoca Vitulina Richardsi, Census in California, June 2-5, 30 and July 1, 1986 written by Doyle A. Hanan and published by . This book was released on 1987 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pacific Harbor Seal, Phoca Vitulina Richardsi, Census in California During May-July 2004 by : Mark S. Lowry
Download or read book Pacific Harbor Seal, Phoca Vitulina Richardsi, Census in California During May-July 2004 written by Mark S. Lowry and published by . This book was released on 2005 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: An aerial photographic census of Pacific harbor seals (Phoca vitulina richardsi) was conducted in California 18 May-19 July 2004 to document the number of seals hauled out during the molt period. To compensate for latitudinal differences in the timing of the molt, the state of California was divided into three sections and each section was surveyed on different dates. The three sections were: (1) Channel Islands and mainland coast of southern California from the U.S./Mexico border to Pismo Beach, (2) central California from Pismo Beach to Point Reyes and San Francisco Bay estuary, and (3) northern California from Point Reyes to the California/Oregon border. Aerial photographic surveys at the Channel Islands and the mainland coast of southern California occurred during the afternoon high-low tide cycle on 18-20 May and 1-3 June at tide levels of 0.43 m to 0.88 m and 0.40 m to 0.73 m, respectively. Surveys in central California occurred during the low-low tide cycle at tide levels of -0.03 m to 0.49 m on 22-25 June. Surveys in northern California occurred during the low-low tide cycle at tide levels of -0.34 m to 0.43 m on 5-9 July and 18-19 July (except at South Humboldt Bay, Eel River, and Cape Mendocino where tide levels were 0.49 m to 0.52 m, 0.89 m, and 0.98 m, respectively). Color transparency photographs of harbor seals were taken with a 126-mm-format camera equipped with image motion compensation. The latitude and longitude of each photograph was recorded by linking the camera to a computer and Global Positioning System (GPS). Two to three observers searched for hauled-out seals. Seals were photographed as the aircraft was flown over the coastline at 213 m (700 ft). A total of 563 haulout sites within the state of California were found during complete surveys conducted at a mean tide level of 0.28 m (-0.46 m to 0.98 m). At the Channel Islands there were 4,344 seals counted onshore, along the mainland coast of California and San Francisco Bay estuary there were 21,989, and statewide there were 26,333. The mainland coast of California was stratified into nineteen 0.5-degree latitude segments with counts from the San Francisco Bay estuary making up the twentieth stratum. Stratum 37.50E to 37.99E had the most seals (n = 3,360) and the most seals at a single haulout site (n = 939). Stratum 40.50E to 40.99E had the highest median (104) and mean (178.4) number of seals per haulout. Of the eight Channel Islands in southern California, Santa Cruz Island had the most seals (n =1,102) and Santa Barbara Island the fewest (n = 12). Total 2004 counts were greater than 2002 counts at mainland sites, but counts at the Channel Islands were relatively stable.
Book Synopsis Northern Elephant Seal Monitoring (Mirounga Angustirostris) at Point Reyes National Seashore 2008-2009 Breeding Seasons by : Sarah Allen
Download or read book Northern Elephant Seal Monitoring (Mirounga Angustirostris) at Point Reyes National Seashore 2008-2009 Breeding Seasons written by Sarah Allen and published by CreateSpace. This book was released on 2013-08-06 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Northern elephant seals (Mirounga angustirostris) established a breeding population at Point Reyes National Seashore (PORE) in 1981 and since then the colony has grown steadily (Allen et al. 1989). Currently, elephant seals breed at numerous sites within PORE, with four primary sites located at Drake's Beach (DB), Point Reyes Headland (PRH), South Beach (SB), and Chimney Rock Loop (CRL). PORE began to monitor the elephant seal population to contribute to the understanding of population changes and management needs, and to develop research, interpretation and enforcement strategies. A pinniped monitoring protocol was developed in 2009 and includes objectives for monitoring elephant seals to determine trends population growth and productivity.
Book Synopsis Estimating Population Size of Pacific Harbor Seals (Phoca Vitulina Richardsi) at Children's Pool Beach in La Jolla, California, Using Photo-identification by : Traci A. Linder
Download or read book Estimating Population Size of Pacific Harbor Seals (Phoca Vitulina Richardsi) at Children's Pool Beach in La Jolla, California, Using Photo-identification written by Traci A. Linder and published by . This book was released on 2011 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Children's Pool Beach in La Jolla, CA is a Pacific harbor seal (Phoca vitulina richardsi) rookery at the center of a large legal controversy. Due to the heated contention surrounding this rookery, very few scientific studies have been done on the population of harbor seals that use this haul-out site. Maximum daily haul-out counts rarely exceed 200, and management decisions have been framed around the assumption of a largely resident population of no more than approximately 250 seals. In this study I used photo-identification and mark-recapture methods to estimate the total population of Pacific harbor seals that used Children's Pool Beach as a haul-out site during January - October 2008. I photographed the ventral surfaces of adult harbor seals at Children's Pool Beach, and then entered each good to high quality photograph into an interactive computer-assisted photograph-matching system for individual identification. Each individual identification was confirmed by both a trained volunteer and myself, resulting in a 4% visual matching error rate. After analysis concluded, 480 unique adult harbor seals were individually identified after applying the 4% visual matching error rate. Abundance estimation was calculated using the Chapman-Petersen capture-recapture model. My calculations yielded a population estimate of 596 individuals during January - October 2008, which is two to three times larger than previously believed. These findings suggest a population that is at least partially open with considerable coastal movement, suggesting that Children's Pool Beach is potentially part of a regional network of interconnected haul-out site.
Book Synopsis Dynamics of Abundance and Distribution for Pacific Harbor Seal, Phoca Vitulina Richardsi, on the Coast of California by : Doyle Alan Hanan
Download or read book Dynamics of Abundance and Distribution for Pacific Harbor Seal, Phoca Vitulina Richardsi, on the Coast of California written by Doyle Alan Hanan and published by . This book was released on 1996 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Northern Elephant Seal Monitoring 2005-2007 Report, Point Reyes National Seashore by : Dawn Adams
Download or read book Northern Elephant Seal Monitoring 2005-2007 Report, Point Reyes National Seashore written by Dawn Adams and published by CreateSpace. This book was released on 2013-08-06 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: After having been extirpated to near extinction at the turn of the century, northern elephant seals (Mirounga angustirostris) have re-established breeding colonies on isolated beaches and offshore islands along the California coast since the 1950's (Stewart et al. 1994). In 1981, the first northern elephant seal birth was recorded at an isolated pocket beach at the Point Reyes National Seashore (PORE; Allen et al. 1989).
Book Synopsis Harbor Seal, Phoca Vitulina Richardsi, Census in California, May-June, 1993 by : Doyle A. Hanan
Download or read book Harbor Seal, Phoca Vitulina Richardsi, Census in California, May-June, 1993 written by Doyle A. Hanan and published by . This book was released on 1994 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Behavior and Distribution of the Pacific Harbor Seal, Phoca Vitulina Richardsi, at Point San Pedro, San Mateo County, California by : Kurt C. Heinonen
Download or read book The Behavior and Distribution of the Pacific Harbor Seal, Phoca Vitulina Richardsi, at Point San Pedro, San Mateo County, California written by Kurt C. Heinonen and published by . This book was released on 1985 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Final recovery plan for the steller sea lion (Eumetopias jubatus) by :
Download or read book Final recovery plan for the steller sea lion (Eumetopias jubatus) written by and published by . This book was released on 1994 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tropical Pinnipeds by : Juan J. Alava
Download or read book Tropical Pinnipeds written by Juan J. Alava and published by CRC Press. This book was released on 2017-07-12 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pinnipeds are a fascinating group of marine mammals that play a crucial role as apex predators and sentinels of the functioning and health of marine ecosystems. They are found in the most extreme environments from the Polar regions to the tropics. Pinnipeds are comprised of about 34 species, and of those at least 25% live permanently in tropical zones. This book reviews and updates current research on the biology, marine ecology, bio-monitoring, and conservation of tropical pinniped populations, including their behavior, anthropogenic stressors, and health. It also looks at challenges to be faced for the conservation of tropical pinnipeds, many of which are threatened species.
Book Synopsis The Rasputin Effect: When Commensals and Symbionts Become Parasitic by : Christon J. Hurst
Download or read book The Rasputin Effect: When Commensals and Symbionts Become Parasitic written by Christon J. Hurst and published by Springer. This book was released on 2016-07-05 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume focuses on those instances when benign and even beneficial relationships between microbes and their hosts opportunistically change and become detrimental toward the host. It examines the triggering events which can factor into these changes, such as reduction in the host’s capacity for mounting an effective defensive response due to nutritional deprivation, coinfections and seemingly subtle environmental influences like the amounts of sunlight, temperature, and either water or air quality. The effects of environmental changes can be compounded when they necessitate a physical relocation of species, in turn changing the probability of encounter between microbe and host. The change also can result when pathogens, including virus species, either have modified the opportunist or attacked the host’s protective natural microflora. The authors discuss these opportunistic interactions and assess their outcomes in both aquatic as well as terrestrial ecosystems, highlighting the impact on plant, invertebrate and vertebrate hosts.
